SOLUTION: 3. Candy and Tim share a paper route. It takes Candy 70 minutes to deliver all the papers, whereas Tim takes 80 minutes. How long does it take them when they work together?

Question 9809: 3. Candy and Tim share a paper route. It takes Candy 70 minutes to deliver all the papers, whereas Tim takes 80 minutes. How long does it take them when they work together?
Found 2 solutions by Needhelp911, rapaljer:
Answer by Needhelp911(2) (Show Source): You can put this solution on YOUR website!
70
+80
------
150
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
It looks like you really do NEED HELP on this one!

Let x = time it takes them to do the paper route together.

This means that in 1 minute, together they can do of the paper route.

In 1 minute working alone, Candy can do 1/70th of the route, and in 1 minute working alone, Tim can do 1/80th of the route.

The equation is that the part Candy can do in 1 minute + the part that time can do in 1 minute = the part they can do together in 1 minute:

The LCD is 560x, so multiply both sides of the equation by 560x:

= 37.3 minutes.

R^2 at SCC
RELATED QUESTIONS
Candy and Tim share a paper route. It takes Candy 70 minutes to deliver all the papers,... (answered by Cromlix)
Candy and Tim share a paper route. It takes Candy 36 minutes to deliver all the papers,... (answered by stanbon)
Candy and Tim share a paper route. It takes Candy 45 minutes to deliver all the papers,... (answered by josgarithmetic,ikleyn)
Candy and Tim share a paper route. It takes Candy 50 min to deliver all the papers, and... (answered by Alan3354)
Candy and Tom share a paper route. It takes Candy 70 minutes to deliver all the papers,... (answered by nerdybill)
candy and tim share a paper route. it takes candy 70 mins. to deliver all the papers and... (answered by josmiceli)
Candy and Tim share a paper route. It takes Candy 30 min to deliver all the papers, and... (answered by ptaylor)
Candy and Tim share a paper route. It takes Candy 40 min to deliver all the papers, and... (answered by solver91311)
Candy and Tim share a paper route. It takes Candy 65 min to deliver all the papers, and... (answered by nyc_function)